130

Table 67. Characteristics of Tuberculosis Cases Estimated to be Attributed to Overall and Extensive Recent States1, 2015–2016

Case characteristics

Total genotyped cases2

Cases not attributed to overall 

recent transmission

Cases attributed to overall 

recent transmission3

No. (%) No. (%) 

Total 13,777 11,883 (86.3) 1,894 (13.7) 

Origin of birth

U.S-born 4,272 3,154 (73.8) 1,118 (26.2) Non-U.S.–born 9,484 8,712 (91.9) 772 (8.1) 

Unknown or missing 21 17 (81.0) 4 (19.0) 

Race and ethnicity

Hispanic/Latino 3,714 3,154 (84.9) 560 (15.1) 

American Indian/Alaska Native 193 122 (63.2) 71 (36.8) 

Asian 5,009 4,623 (92.3) 386 (7.7) Black/African American 2,821 2,223 (78.8) 598 (21.2) 

Native Hawaiian/Other Pacific Islander 125 93 (74.4) 32 (25.6) 

White 1,784 1,553 (87.1) 231 (12.9) Multiple race 87 72 (82.8) 15 (17.2) Unknown or missing 44 43 (97.7) 1 (2.3) 

Age group (years)

0–4 120 63 (52.5) 57 (47.5) 5–14 106 77 (72.6) 29 (27.4) 15–24 1,380 1,168 (84.6) 212 (15.4) 25–44 4,202 3,576 (85.1) 626 (14.9) 45–64 4,386 3,670 (83.7) 716 (16.3) 

≥65 3,577 3,323 (92.9) 254 (7.1) Unknown 6 6 (100.0) 0 (0) 

Disease site

Pulmonary only 10,108 8,607 (85.2) 1,501 (14.8) 

Extrapulmonary 2,115 1,907 (90.2) 208 (9.8) Both 1,546 1,361 (88.0) 185 (12.0) Unknown 8 8 (100.0) 0 (0) 

Sputum smear 

Positive 6,547 5,567 (85.0) 980 (15.0) Negative 5,543 4,821 (87.0) 722 (13.0) Not done 1,669 1,447 (86.7) 192 (11.5) Unknown or missing 18 18 (100.0) 0 (0) 

Cavitary disease5

Yes 141 119 (84.4) 22 (15.6) 

No 1,104 968 (87.7) 136 (12.3) Unknown or missing 2 2 (100.0) 0 (0) 

Homeless within past year

Yes 753 477 (63.4) 276 (36.7) No 12,957 11,344 (87.6) 1,613 (12.4) Unknown or missing 67 62 (92.5) 5 (7.5) 
Table 67. (Con’t) Characteristics of Tuberculosis Cases Estimated to be Attributed to Overall and Extensive 

United States1, 2015–2016

131

Case characteristics

Total genotyped cases2

Cases not attributed to overall 

recent transmission

Cases attributed to overall 

recent transmission3

No. (%) No. (%) 

Excess alcohol use within the past year

Yes 1,517 1,080 (71.2) 437 (28.8) 

No 12,088 10,651 (88.1) 1,437 (11.9) Unknown or missing 172 152 (88.4) 20 (11.6) 

Injecting illicit drug use within past year

Yes 197 128 (65.0) 69 (35.0) 

No 13,422 11,629 (86.6) 1,793 (13.4) Unknown or missing 158 126 (79.7) 32 (20.3) 

Noninjecting illicit drug use within past year

Yes 1,011 677 (67.0) 334 (33.0) 

No 12,612 11,085 (87.9) 1,527 (12.1) Unknown or missing 154 121 (78.6) 33 (21.4) 

Resident of a correctional facility at the time of diagnosis

Yes 449 351 (78.2) 98 (21.8) No 12,582 10,928 (86.9) 1,654 (13.1) 

Unknown or missing 746 604 (81.0) 142 (19.0) 

HIV status

Positive 705 585 (83.0) 120 (17.0) Negative 11,632 10,010 (86.1) 1,622 (13.9) 

Refused testing 321 281 (87.5) 40 (12.5) 

Testing not offered 760 684 (90.0) 76 (10.0) Unknown, missing or indeterminate 359 323 (90.0) 36 (10.0) 

Multidrug-resistant TB

Yes 182 162 (89.0) 20 (11.0) 

No 13,295 11,458 (86.2) 1,837 (13.8) Unknown or missing 300 263 (87.7) 37 (12.3) 

1Oklahoma cases were excluded because they lacked sufficient geographic data to apply the plausible source-case method. 2Total number of M. tuberculosis genotyped cases that are eligible to be evaluated for recent transmission (i.e., complete data for the plausible-source case me3Number of cases attributed to overall recent transmission includes any given case with a plausible source case regardless of cluster size. 4Number of cases attributed to extensive recent transmission includes only cases in a plausible chain of transmission of six or more cases (five secondary and 5Cavitary disease only assessed for persons with pulmonary TB and an abnormal x-ray.